Spatial Finite Element Analysis for Dynamic Response of Curved Thin-Walled Box Girder Bridges
Table 2
Comparison of the frequencies and modes.
Mode number
①/Hz
②/Hz
③/Hz
Error 1/%
Error 2/%
The mode that dominates dynamic response
1
9.67
9.34
9.69
The first-order mode of vertical bending
2
19.47
19.42
19.28
The first-order mode of lateral bending
3
21.66
21.89
21.43
The first-order mode of torsion
4
22.98
22.14
23.42
The second-order mode of vertical bending
5
36.57
37.81
35.71
The second-order mode of torsion
6
38.67
40.41
40.11
The second-order mode of lateral bending
7
43.74
44.98
42.83
The third-order mode of vertical bending
8
51.39
55.15
54.91
The first-order mode of axial deformation
Notes: ① for SOLID45, ② for BEAM188, and ③ for the present element, error 1 for the difference between the frequencies obtained by BEAMA188 and those obtained by SOILD45, error 2 for the difference between the frequencies obtained by the present element and those obtained by SOILD45.
